ISDB-T modulator
  ISDB-T modulator
  The ISDB-T modulator modulates an MPEG-TS DVB-SPI input into an ISDB-T signal in baseband I/Q. ISDB-T modulator block diagram  

The MVD ISDB-T core is a drop-in module that includes the following functions:
  • Input data framer from DVB-SPI source (MPEG-TS flow)
  • ISDB-T modulator
    • Reed-Solomon encoder
    • Energy dispersal
    • Convolutional interleaver
    • FEC convolution encoder
    • QAM symbol mapper
    • Time & Frequency Interleaver
    • IFFT)
  • Low Pass Filter
  • Output for complex DAC (2 x 16 bits)
  • ARIB STD-B31 compliant operation, supporting one, two or three-layers
  • Drop-in module for Spartan-6™, Virtex-6™, Artix-7™, Kintex-7™, Virtex-7™ FPGAs and Zynq™
  • Single clock (up to 160 MHz)
  • Single external memory (DDR memory)
  • Robust SPI input (discarding incorrect input packets)
  • PCR re-stamping
  • Configurable Convolutional Rate
  • Programmable DQPSK, QPSK, 16-QAM and 64-QAM Symbol Mapping
  • Configurable support for 2k, 4k and 8k OFDM modes (modes 1, 2 & 3)
  • Programmable Guard Interval (1/4, 1/8, 1/16, 1/32)
  • Supports variable channel width 6MHz to 8MHz
  • Full 13-segment ISDB-T modulator
  • Complex baseband outputs (2 x 16 bits) @ Fsymbol rate
  • Fully synthesizable RTL VHDL design (not delivered) for easy customization
  • Design delivered as Netlist
  • MER > 42dB

ISDB-T may be used in applications related to terrestrial transmission, typically at the head end.

The  ISDB-T modulator core is delivered for baseband output to be natively connected to AD9789 DAC from Analog Devices.
When associated to our Up Sampler IP core, it can be used in Intermediate Frequency applications with IF DAC such as
AD9744 from Analog Devices 
When associated to our Up Sampler and Up Converter IP cores, it can be used in RF applications with RF DAC such as AD9739A from Analog Devices or MAX5881 from Maxim.

Companion cores

Product brief        
Data sheet